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US Patent: 161,122
Steam Boiler Furnace
Patentee: John C. Hoadley (exact or similar names) - Lawrence, Essex County, MA USPTO Classifications: 110/196, 122/406.1, 122/98 Tool Categories: propulsion and energy : steam apparatus : stationary boilers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 19, 1874 Granted: Mar. 23, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for J. C. Hoadley Co.

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